Finding the Fourth Proportional to 101,219.68, 139,683.36 and 56,507.68
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Solution
The fourth proportional to 101,219.68, 139,683.36 and 56,507.68 is: 77,980.71
Step by Step Solution
- Step 1: Write the proportion equation
101,219.68 : 139,683.36 = 56,507.68 : x - Step 2: Convert to fraction form
101,219.68/139,683.36 = 56,507.68/x - Step 3: Cross multiply
101,219.68x = 139,683.36 × 56,507.68 - Step 4: Simplify right side
101,219.68x = 7,893,182,608.20 - Step 5: Solve for x
x = 7,893,182,608.20/101,219.68 - Step 6: Final answer
x = 77,980.71
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.